Abstract: Embodiments of a curable formaldehyde-free resin, and a method for the manufacture of the curable formaldehyde-free resin are provided herein. The curable formaldehyde-free resin is provided in the form of an aqueous dispersion. The curable formalde-hyde-free resin comprises component a) a reducing sugar, component b) a polycarboxylic acid, component c) one or more polyols having a molecular weight of less than 1000 g/mol, and component d) epoxysilane. The total amount of component c) in the curable formaldehyde-free resin is between 0.5 and 10% wt. with respect to the sum of components a) and b). The amount of component d) is from 0.1% wt. to less than or equal to 2% wt. with respect to the sum of components a) and b). Further, a method for the manufacture of the curable formaldehyde-free resin according to one of the embodiments of the present disclosure is provided.

Abstract: A method for the manufacture of mineral wool, is disclosed. In one example, the method comprises reacting an aqueous phenol-formaldehyde resole with free formaldehyde with a first amount of urea, thereby preparing a prereact; contacting the prereact with a second amount of urea; applying the resulting mixture of prereact and second amount of urea, as part of a binder, optionally with additives, to the surface of mineral fibers; and curing the binder on the surface of the mineral fibers. The total amount of urea used ranges 10-40 wt. % relative to the sum of the dry weight of the phenol-formaldehyde resole and the total amount of urea, and the second amount of urea used is at least 40 wt.-% of the total amount of urea. The invention also relates to a mineral wool product with reduced emissions of formaldehyde obtained by the method.

Abstract: A method for the manufacture of mineral wool products is disclosed. In one example, the method comprises reacting an aqueous phenol-formaldehyde resole with free formaldehyde with a first amount of urea, thereby preparing a prereact. The prereact is contacted with a second amount of urea. The resulting mixture of prereact and second amount of urea, as part of a binder, optionally with additives is applied to the surface of mineral fibers. The binder is cured on the surface of the mineral fibers. A mineral wool product with reduced emissions of formaldehyde is also disclosed.

Abstract: A curable resin and method is disclosed. In one example, the curable resin is for the manufacture of mineral fiber products such as mineral wool insulating products. The curable resin includes components a), b) and c), wherein a) is a saccharide, b) is a polycarboxylic crosslinking agent, and c) is a polyvalent metal oxide curing accelerator. In one example, the curable resin is formaldehyde free.

Abstract: A curable formaldehyde-free resin in the form of an aqueous dispersion. The resin comprising components a), b) and c), wherein: a) is water-insoluble native starch, b) is a polycarboxylic polymer, and c) is non-polymeric polycarboxylic acid compound, and wherein the amount of polycarboxylic polymer (b) comprised in the resin is between 2 and 45 wt.-% relative to the sum of the weights of the components a), b) and c).

Abstract: A method for the manufacture of mineral wool, is disclosed. In one example, the method comprises reacting an aqueous phenol-formaldehyde resole with free formaldehyde with a first amount of urea, thereby preparing a prereact; contacting the prereact with a second amount of urea; applying the resulting mixture of prereact and second amount of urea, as part of a binder, optionally with additives, to the surface of mineral fibers; and curing the binder on the surface of the mineral fibers. The total amount of urea used ranges 10-40 wt. % relative to the sum of the dry weight of the phenol-formaldehyde resole and the total amount of urea, and the second amount of urea used is at least 40 wt.-% of the total amount of urea. The invention also relates to a mineral wool product with reduced emissions of formaldehyde obtained by the method.

Abstract: A curable resin and method is disclosed. In one example, the curable resin is for the manufacture of mineral fiber products such as mineral wool insulating products. The curable resin includes components a), b) and c), wherein a) is a saccharide, b) is a polycarboxylic crosslinking agent, and c) is a polyvalent metal oxide curing accelerator. In one example, the curable resin is formaldehyde free.

Abstract: A curable formaldehyde-free resin in the form of an aqueous dispersion. The resin comprising components a), b) and c), wherein: a) is water-insoluble native starch, b) is a polycarboxylic polymer, and c) is non-polymeric polycarboxylic acid compound, and wherein the amount of polycarboxylic polymer (b) comprised in the resin is between 2 and 45 wt.-% relative to the sum of the weights of the components a), b) and c).

Abstract: The present invention relates to a new formaldehyde-free binder composition for mineral wool products, wherein the binder composition is an aqueous composition containing starch, wherein an amount of 95 weight % or more of the starch is water-insoluble native starch, and an acrylic component. The present invention also relates to the use of this formaldehyde-free binder composition in the manufacturing of mineral wool insulation products. Finally, the present invention relates to a process for manufacturing the formaldehyde-free binder composition wherein a dispersion of starch, wherein an amount of 95 weight % or more of the starch is water-insoluble native starch, is brought in contact with the acrylic component at a temperature of not higher than 40° C.

Abstract: A package (10) comprises a multitude of rolls (1a, 1b, 1c, 1d, 2a, 2b, 2c, 2d) or packages of panels (22a, 22b, 22c, 22d, 22e, 22f, 22g, 22h) of mineral wool, especially fibre glass insulating material, wherein each roll (1a, 1b, 1c, 1d, 2a, 2b, 2c, 2d) or package of panels (22a, 22b, 22c, 22d, 22e, 22f, 22g, 22h) is held in a compressed state and a plurality of rolls (1a, 1b, 1c, 1d, 2a, 2b, 2c, 2d) or packages of panels (22a, 22b, 22c, 22d, 22e, 22f, 22g, 22h) are grouped into one module (6), respectively and a plurality of modules (6a, 6b, c) are arranged on a support surface (9) of the package (10), the modules (6; 6a, 6b, 6c) being in a compressed state and packed in a wrapping (3) of plastic film.